# OC Root 2nd 3rd 4th PC Gene/Definition OC.661580 Archaea.64187 Euryarchaeota.49176 Methanocella.2136 mpd.2020 mpd:MCP_2083 conserved hypothetical protein OC.661580 Archaea.64187 Euryarchaeota.49176 Methanocella.2136 rci.2600 rci:RRC187 conserved hypothetical protein